Chemical decomposition by normalization of millimeter-wave spectra

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The sharp, distinct absorption spectra of chemicals at low pressures in the mm wave range become broadened at high pressures, so that detecting and quantifying different chemicals at high pressures become difficult. This paper proposes a method of decomposition based on the low pressure spectra. Normalized low pressure spectral amplitudes are used as features to train a neural network. The network is tested using the peak spectra obtained for an unknown plume of chemicals at high pressure. Initial tests conducted on simulated and experimental spectra of selected chemicals show that the decomposition results of the proposed method are dependent on ... continued below

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5 p.

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Gopalan, K. & Gopalsami, N. October 1, 1996.

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  • Gopalan, K. Purdue Univ., Hammond, IN (United States). Dept. of Engineering
  • Gopalsami, N. Argonne National Lab., IL (United States)

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Description

The sharp, distinct absorption spectra of chemicals at low pressures in the mm wave range become broadened at high pressures, so that detecting and quantifying different chemicals at high pressures become difficult. This paper proposes a method of decomposition based on the low pressure spectra. Normalized low pressure spectral amplitudes are used as features to train a neural network. The network is tested using the peak spectra obtained for an unknown plume of chemicals at high pressure. Initial tests conducted on simulated and experimental spectra of selected chemicals show that the decomposition results of the proposed method are dependent on the dominance of the chemicals in the mixture - a characteristic common to conventional methods of decomposition.

Physical Description

5 p.

Notes

OSTI as DE96015070

Source

  • IEEE instrumentation and measurement technology conference, Brussels (Belgium), 4-6 Jun 1996

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  • Other: DE96015070
  • Report No.: ANL/ET/CP--91028
  • Report No.: CONF-9606271--1
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 389077
  • Archival Resource Key: ark:/67531/metadc684982

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 12:10 p.m.

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Gopalan, K. & Gopalsami, N. Chemical decomposition by normalization of millimeter-wave spectra, article, October 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc684982/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.